The CM330ABLK is one of our newest AIRCARE tabletop unit's. This Companion series unit is compact and has a modern sleek design. This tabletop humidifier is efficient in both size and moisture output. Our humidifiers work by adding invisible moisture to your environment by moving dry air through a saturated wick. Maintaining proper humidity levels between 30% to 50% in your home/office/workplace has been scientifically proven to help prevent the flu and allergies. Proper humidity hydrates your skin, alleviates dry eyes, scratchy throats and can reduce snoring. With a doctor's approval, increased humidity can reduce asthma and allergy symptoms. It also protects fine furniture, musical instruments, collectibles and wood floors. Proper humidity makes you feel warmer allowing you to lower your thermostat setting which will save money.